424 static int32_t *aptx_reconstructed_differences_update(Prediction *prediction,  in aptx_reconstructed_differences_update()  argument
428     int32_t *rd1 = prediction->reconstructed_differences, *rd2 = rd1 + order;  in aptx_reconstructed_differences_update()
429     int p = prediction->pos;  in aptx_reconstructed_differences_update()
432     prediction->pos = p = (p + 1) % order;  in aptx_reconstructed_differences_update()
437 static void aptx_prediction_filtering(Prediction *prediction,  in aptx_prediction_filtering()  argument
446 … reconstructed_sample = av_clip_intp2(reconstructed_difference + prediction->predicted_sample, 23);  in aptx_prediction_filtering()
447 …predictor = av_clip_intp2((MUL64(prediction->s_weight[0], prediction->previous_reconstructed_sampl…  in aptx_prediction_filtering()
448                              + MUL64(prediction->s_weight[1], reconstructed_sample)) >> 22, 23);  in aptx_prediction_filtering()
449     prediction->previous_reconstructed_sample = reconstructed_sample;  in aptx_prediction_filtering()
451 …reconstructed_differences = aptx_reconstructed_differences_update(prediction, reconstructed_differ…  in aptx_prediction_filtering()
455         prediction->d_weight[i] -= rshift32(prediction->d_weight[i] - srd*srd0, 8);  in aptx_prediction_filtering()
456         predicted_difference += MUL64(reconstructed_differences[-i], prediction->d_weight[i]);  in aptx_prediction_filtering()
459     prediction->predicted_difference = av_clip_intp2(predicted_difference >> 22, 23);  in aptx_prediction_filtering()
460     prediction->predicted_sample = av_clip_intp2(predictor + prediction->predicted_difference, 23);  in aptx_prediction_filtering()
464                                  Prediction *prediction,  in aptx_process_subband()  argument
473                       -prediction->predicted_difference);  in aptx_process_subband()
474     same_sign[0] = sign * prediction->prev_sign[0];  in aptx_process_subband()
475     same_sign[1] = sign * prediction->prev_sign[1];  in aptx_process_subband()
476     prediction->prev_sign[0] = prediction->prev_sign[1];  in aptx_process_subband()
477     prediction->prev_sign[1] = sign | 1;  in aptx_process_subband()
480     sw1 = rshift32(-same_sign[1] * prediction->s_weight[1], 1);  in aptx_process_subband()
484     weight[0] = 254 * prediction->s_weight[0] + 0x800000*same_sign[0] + sw1;  in aptx_process_subband()
485     prediction->s_weight[0] = av_clip(rshift32(weight[0], 8), -range, range);  in aptx_process_subband()
487     range = 0x3C0000 - prediction->s_weight[0];  in aptx_process_subband()
488     weight[1] = 255 * prediction->s_weight[1] + 0xC00000*same_sign[1];  in aptx_process_subband()
489     prediction->s_weight[1] = av_clip(rshift32(weight[1], 8), -range, range);  in aptx_process_subband()
491     aptx_prediction_filtering(prediction,  in aptx_process_subband()
501                              &channel->prediction[subband],  in ff_aptx_invert_quantize_and_prediction()
530             Prediction *prediction = &channel->prediction[subband];  in ff_aptx_init()  local
531             prediction->prev_sign[0] = 1;  in ff_aptx_init()
532             prediction->prev_sign[1] = 1;  in ff_aptx_init()